The Wanderer:
Also on a mostly-cosmetic level, if you log in at a text console
without systemd, you will get a certain set of messages, coming mostly
from login and from your shell - but with systemd, logging in at a
text console also produces a mess of extra messages coming from
logind, which are largely irrelevant to whoever just logged in and
which step all over either the original set of messages or the actual
shell prompt.
As far as I've been able to determine, there is no way to get logind
to not produce these messages, without also preventing it from
producing messages later - or in background logging - which you might
actually want. And, if I'm interpreting the situation correctly, you
will probably see these messages in your console every time _anyone_
gets a new "session" on that computer, even if it's not you. This is
the final-straw behavior which led me to reject systemd for my own
systems.
That last part doesn't sound right. Did you do a detailed write up of
what's happening, anywhere?